Damping of inhomogeneities in neutralino dark matter
- The lightest supersymmetric particle, most likely the neutralino, might account for a large fraction of dark matter in the Universe.We show that the primordial spectrum of density fluctuations in neutralino cold dark matter (CDM) has a sharp cut-off due to two damping mechanisms: collisional damping during the kinetic decoupling of the neutralinos at (10 MeV) and free streaming after last scattering of neutralinos. The cut-off in the primordial spectrum defines a minimal mass for CDM objects in hierarchical structure formation. For typical neutralino and sfermion masses the first gravitionally bound neutralino clouds have masses above 10 -6 M .
Author: | Dominik J. Schwarz, Stefan Hofmann, Horst StöckerORCiDGND |
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URN: | urn:nbn:de:hebis:30-21431 |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2005/11/17 |
Year of first Publication: | 2001 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2005/11/17 |
Tag: | dunkle Materie; neutralino; supersymmetrische Partikel dark matter; neutralino; supersymmetric particle |
Note: | In *Budapest 2001, High energy physics* hep2001/20. [astro-ph/0110601] |
Source: | In *Budapest 2001, High energy physics* hep2001/20. [astro-ph/0110601] |
HeBIS-PPN: | 22645424X |
Institutes: | Physik / Physik |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Licence (German): | Deutsches Urheberrecht |